Electrum indexer refactoring and bug fixing

[dr-orlovsky]

Alternative to #61 which additionally fixes other bugs and issues with the code:

• consensus deserialization which instead of binary bytes takes a byte representation of the hex string, resulting in invalid transaction data:

  bp-wallet/src/indexers/electrum.rs

  Line 174 in dbfb8ba

  let bp_tx = Tx::consensus_deserialize(hex_bytes)

• panics due to expects in all data processings, which will result in global crashing and DDoS for all RGB wallets if a major electrum server used by them would be compromised or will have an API break

It also removes overall convolution of the logic which makes it hard to review and audit

The PR leaves further required and important improvements for the later: #64

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 98 lines in your changes missing coverage. Please review.

Project coverage is 0.0%. Comparing base (dbfb8ba) to head (2047ef9).
Report is 3 commits behind head on master.

Files	Patch %	Lines
src/indexers/electrum.rs	0.0%	96 Missing ⚠️
src/indexers/esplora.rs	0.0%	2 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##           master    #63   +/-   ##
=====================================
  Coverage     0.0%   0.0%           
=====================================
  Files          23     23           
  Lines        2128   2071   -57     
=====================================
+ Misses       2128   2071   -57     

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[dr-orlovsky]

consensus deserialization which instead of binary bytes takes a byte representation of the hex string, resulting in invalid transaction data:

bp-wallet/src/indexers/electrum.rs

Line 174 in dbfb8ba

let bp_tx = Tx::consensus_deserialize(hex_bytes)

I am sorry, this is actually not true, I misread the previous code: the hex_bytes are binary coming out of Vec::from_hex

But still it is better to use simpler Tx::from_str form.

[dr-orlovsky]

I have checked integration tests, they all do pass

[zoedberg]

I confirm all integration tests are working.